添加第九章类的练习

Author: OctopusLian

README.md

@@ -1,4 +1,6 @@
 ## 《Python编程从入门到实践》课后练习  
+
+### 第一部分-基础知识  
 - chapter02_变量和简单数据类型  
 - chapter03_列表简介  
 - chapter04_操作列表  
@@ -9,3 +11,20 @@
 - chapter09_类  
 - chapter10_文件和异常  
 - chapter11_测试代码  
+
+### 第二部分-项目  
+
+#### 项目1：外星人入侵  
+- chapter12_武装飞船  
+- chapter13_外星人  
+- chapter14_记分  
+
+#### 项目2：数据可视化  
+- chapter15_生成数据  
+- chapter16_下载数据  
+- chapter17_使用API  
+
+#### 项目3：Web应用程序  
+- chapter18_Diango入门  
+- chapter19_用户账户  
+- chapter20_设置应用程序的样式并对其进行部署  

chapter09/9-1.py

@@ -0,0 +1,23 @@
+# encoding: utf-8
+
+class Restaurant():
+    # 创建一个饭馆的类
+
+    def __init__(self, name, cuisine_type):
+        self.name = name.title()
+        self.cuisine_type = cuisine_type
+
+    def describe_restaurant(self):
+        msg = self.name + " serves wonderful " + self.cuisine_type + "."
+        print("\n" + msg)
+
+    def open_restaurant(self):
+        msg = self.name + " is open. Come on in!"
+        print("\n" + msg)
+
+restaurant = Restaurant('the mean queen', 'pizza')
+print(restaurant.name)
+print(restaurant.cuisine_type)
+
+restaurant.describe_restaurant()
+restaurant.open_restaurant()

chapter09/9-10.py

@@ -0,0 +1,5 @@
+from restaurant import Restaurant
+
+channel_club = Restaurant('the channel club', 'steak and seafood')
+channel_club.describe_restaurant()
+channel_club.open_restaurant()

chapter09/9-11.py

@@ -0,0 +1,14 @@
+from user import Admin
+
+eric = Admin('eric', 'matthes', 'e_matthes', '[email protected]', 'alaska')
+eric.describe_user()
+
+eric_privileges = [
+    'can reset passwords',
+    'can moderate discussions',
+    'can suspend accounts',
+    ]
+eric.privileges.privileges = eric_privileges
+
+print("\nThe admin " + eric.username + " has these privileges: ")
+eric.privileges.show_privileges()

chapter09/9-12.py

@@ -0,0 +1,14 @@
+from admin import Admin
+
+eric = Admin('eric', 'matthes', 'e_matthes', '[email protected]', 'alaska')
+eric.describe_user()
+
+eric_privileges = [
+    'can reset passwords',
+    'can moderate discussions',
+    'can suspend accounts',
+    ]
+eric.privileges.privileges = eric_privileges
+
+print("\nThe admin " + eric.username + " has these privileges: ")
+eric.privileges.show_privileges()

chapter09/9-13.py

@@ -0,0 +1,17 @@
+from collections import OrderedDict
+
+glossary = OrderedDict()
+
+glossary['string'] = 'A series of characters.'
+glossary['comment'] = 'A note in a program that the Python interpreter ignores.'
+glossary['list'] = 'A collection of items in a particular order.'
+glossary['loop'] = 'Work through a collection of items, one at a time.'
+glossary['dictionary'] = "A collection of key-value pairs."
+glossary['key'] = 'The first item in a key-value pair in a dictionary.'
+glossary['value'] = 'An item associated with a key in a dictionary.'
+glossary['conditional test'] = 'A comparison between two values.'
+glossary['float'] = 'A numerical value with a decimal component.'
+glossary['boolean expression'] = 'An expression that evaluates to True or False.'
+
+for word, definition in glossary.items():
+    print("\n" + word.title() + ": " + definition)

chapter09/9-14.py

@@ -0,0 +1,39 @@
+from random import randint
+
+class Die():
+    """Represent a die, which can be rolled."""
+
+    def __init__(self, sides=6):
+        """Initialize the die."""
+        self.sides = sides
+
+    def roll_die(self):
+        """Return a number between 1 and the number of sides."""
+        return randint(1, self.sides)
+
+d6 = Die()
+
+results = []
+for roll_num in range(10):
+    result = d6.roll_die()
+    results.append(result)
+print("10 rolls of a 6-sided die:")
+print(results)
+
+d10 = Die(sides=10)
+
+results = []
+for roll_num in range(10):
+    result = d10.roll_die()
+    results.append(result)
+print("\n10 rolls of a 10-sided die:")
+print(results)
+
+d20 = Die(sides=20)
+
+results = []
+for roll_num in range(10):
+    result = d20.roll_die()
+    results.append(result)
+print("\n10 rolls of a 20-sided die:")
+print(results)

chapter09/9-2.py

@@ -0,0 +1,27 @@
+# encoding: utf-8
+
+class Restaurant():
+
+    def __init__(self, name, cuisine_type):
+        #初始化
+        self.name = name.title()
+        self.cuisine_type = cuisine_type
+
+    def describe_restaurant(self):
+        #展示饭馆信息
+        msg = self.name + " serves wonderful " + self.cuisine_type + "."
+        print("\n" + msg)
+
+    def open_restaurant(self):
+        #饭馆信息
+        msg = self.name + " is open. Come on in!"
+        print("\n" + msg)
+
+mean_queen = Restaurant('the mean queen', 'pizza')
+mean_queen.describe_restaurant()
+
+ludvigs = Restaurant("ludvig's bistro", 'seafood')
+ludvigs.describe_restaurant()
+
+mango_thai = Restaurant('mango thai', 'thai food')
+mango_thai.describe_restaurant()

chapter09/9-3.py

@@ -0,0 +1,28 @@
+# encoding: utf-8
+
+class User():
+
+    def __init__(self, first_name, last_name, username, email, location):
+        #初始化用户
+        self.first_name = first_name.title()
+        self.last_name = last_name.title()
+        self.username = username
+        self.email = email
+        self.location = location.title()
+
+    def describe_user(self):
+        print("\n" + self.first_name + " " + self.last_name)
+        print("  Username: " + self.username)
+        print("  Email: " + self.email)
+        print("  Location: " + self.location)
+
+    def greet_user(self):
+        print("\nWelcome back, " + self.username + "!")
+
+eric = User('eric', 'matthes', 'e_matthes', '[email protected]', 'alaska')
+eric.describe_user()
+eric.greet_user()
+
+willie = User('willie', 'burger', 'willieburger', '[email protected]', 'alaska')
+willie.describe_user()
+willie.greet_user()

chapter09/9-4.py

@@ -0,0 +1,35 @@
+# encoding: utf-8
+
+class Restaurant():
+    # 创建一个饭馆的类
+
+    def __init__(self, name, cuisine_type):
+        self.name = name.title()
+        self.cuisine_type = cuisine_type
+
+    def describe_restaurant(self):
+        msg = self.name + " serves wonderful " + self.cuisine_type + "."
+        print("\n" + msg)
+
+    def open_restaurant(self):
+        msg = self.name + " is open. Come on in!"
+        print("\n" + msg)
+    # 设置就餐人数
+    def set_number_served(self,number_served):
+        self.number_served = number_served
+    # 将就餐人数递增
+    def increment_number_served(self, additional_served):
+        self.number_served += additional_served 
+
+restaurant = Restaurant('the mean queen', 'pizza')
+restaurant.describe_restaurant()
+
+print("\nNumber served: " + str(restaurant.set_number_served))
+restaurant.number_served = 430
+print("Number served: " + str(restaurant.number_served))   
+
+restaurant.set_number_served(1257)
+print("Number served: " + str(restaurant.number_served))
+
+restaurant.increment_number_served(239)
+print("Number served: " + str(restaurant.number_served))

chapter09/9-5.py

@@ -0,0 +1,41 @@
+# encoding: utf-8  
+
+class User():
+    
+    def __init__(self, first_name, last_name, username, email, location):
+        #初始化用户
+        self.first_name = first_name.title()
+        self.last_name = last_name.title()
+        self.username = username
+        self.email = email
+        self.location = location.title()
+        self.login_attempts = 0
+
+    def describe_user(self):
+        print("\n" + self.first_name + " " + self.last_name)
+        print("  Username: " + self.username)
+        print("  Email: " + self.email)
+        print("  Location: " + self.location)
+
+    def greet_user(self):
+        print("\nWelcome back, " + self.username + "!")
+
+    def increment_login_attempts(self):
+        self.login_attempts += 1
+
+    def reset_login_attempts(self):
+        self.login_attempts = 0
+
+eric = User('eric', 'matthes', 'e_matthes', '[email protected]', 'alaska')
+eric.describe_user()
+eric.greet_user()
+
+print("\nMaking 3 login attempts...")
+eric.increment_login_attempts()
+eric.increment_login_attempts()
+eric.increment_login_attempts()
+print("  Login attempts: " + str(eric.login_attempts))
+
+print("Resetting login attempts...")
+eric.reset_login_attempts()
+print("  Login attempts: " + str(eric.login_attempts))

chapter09/9-6.py

@@ -0,0 +1,34 @@
+# encoding: utf-8  
+
+class Restaurant():
+    # 创建一个饭馆的类
+
+    def __init__(self, name, cuisine_type):
+        self.name = name.title()
+        self.cuisine_type = cuisine_type
+
+    def describe_restaurant(self):
+        msg = self.name + " serves wonderful " + self.cuisine_type + "."
+        print("\n" + msg)
+
+    def open_restaurant(self):
+        msg = self.name + " is open. Come on in!"
+        print("\n" + msg)
+
+# IceCreamStand继承Restaurant类
+class IceCreamStand(Restaurant):
+
+    def __init__(self, name, cuisine_type='ice_cream'):
+        super().__init__(name, cuisine_type)
+        self.flavors = [] # 存储一个由各种口味的冰淇淋组成的列表
+
+    def show_flavors(self):
+        print("\nWe have the following flavors available:")
+        for flavor in self.flavors:
+            print("- " + flavor.title())
+
+big_one = IceCreamStand('The Big One')
+big_one.flavors = ['vanilla', 'chocolate', 'black cherry']
+
+big_one.describe_restaurant()
+big_one.show_flavors()

chapter09/9-7.py

@@ -0,0 +1,40 @@
+# encoding: utf-8  
+
+class User():
+    
+    def __init__(self, first_name, last_name, username, email, location):
+        #初始化用户
+        self.first_name = first_name.title()
+        self.last_name = last_name.title()
+        self.username = username
+        self.email = email
+        self.location = location.title()
+
+    def describe_user(self):
+        print("\n" + self.first_name + " " + self.last_name)
+        print("  Username: " + self.username)
+        print("  Email: " + self.email)
+        print("  Location: " + self.location)
+
+    def greet_user(self):
+        print("\nWelcome back, " + self.username + "!")
+
+class Admin(User):
+    def __init__(self, first_name, last_name, username, email, location):
+        super().__init__(first_name, last_name, username, email, location)
+        self.privileges = []
+    
+    def show_privileges(self):
+        for privilege in self.privileges:
+            print("- " + privilege)
+
+eric = Admin('eric', 'matthes', 'e_matthes', '[email protected]', 'alaska')
+eric.describe_user()
+
+eric.privileges = [
+    'can reset passwords',
+    'can moderate discussions',
+    'can suspend accounts',
+    ]
+
+eric.show_privileges()